中文摘要：

目的调查2010年江苏省有代表性的2个县（区）农村50岁及以上人群白内障患病率、手术状况、术后视力及其影响因素等。方法采用整群随机抽样方法，在苏南无锡滨湖区（28个调查点）、苏北盐城阜宁县（30个调查点），对12053例50岁及以上人群进行视力和眼部检查，包括裂隙灯显微镜检查评价晶状体混浊程度和白内障手术情况。用Epidata3．0软件建立数据库，采用STATA10．0版统计软件进行统计分析。应用多元逻辑回归分析了解受检者不同年龄、性别、地区经济水平对白内障患病率、白内障盲及重度视力损伤的手术覆盖率、社会负担率以及白内障术后视力效果的影响。以P〈0．05作为差异有统计学意义的标准。按年龄、性别、地区经济水平分别计算白内障的患病率、手术类型、人工晶状体植入率及白内障盲及重度视力损伤的手术覆盖率和社会负担率。分析白内障术后视力〈0．3的原因。组间率的比较采用X^2检验和疾病优势比。结果12053例受检者中，发现白内障2208例，白内障的患病率为18．3％。高龄、女性、经济条件较差人群中白内障患病率增高（P〈0．05）。2208例白内障患者中，263例已进行了手术（手术率11．9％），其中，白内障盲及重度视力损伤者手术139例，手术覆盖率59．7％，社会负担率为1．93％。年龄越大，社会负担率越高（P〈0．01）。人工晶状体植入率85．7％，滨湖以超声乳化吸除加人工晶状体居多（71．0％），阜宁以囊外白内障摘除加人工晶状体居多（73．6％）。术后日常生活视力和最佳矫正视力〉0．7的眼分别占总数的11．2％和19．6％，术后视力差（〈0．3）的主要原凶是晶状体后囊膜混浊、视网膜疾病和屈光不正。结论白内障是江苏省最常见的致盲眼病，其患病率及手术率与年龄、性别、地区经济水平有关，白内障盲?

英文摘要：

Objective To survey the prevalence, operative status, surgical coverage rate and social burden rate of cataract blindness among older adults aged 50 years or above in 2 typical counties （district） of Jiangsu Province, China in 2010. Methods Cluster sampling was used in randomly selected 12 867 individuals aged 50 years or above in 58 clusters in Funing County of Northern Jiangsu and Binhu District of Southern Jiangsu. Among them, 12 053 individuals received visual acuity and eye examinations （response rate 93.8% ）. Lens and cataract operative status were evaluated by slit-lamp biomicroscope. Data bank was established by Epidata3.0 Software. Statistical analyses were performed with Stata/SE Statistical Software,version 10.0. Confidence intervals and P values （ significant at P 〈 0. 05 ） for prevalence of cataract, surgical coverage rate of cataract, social burden rate and surgical outcomes of cataract blindness were calculated with adjustment for clustering effects and stratification associated with the sampling design. Results Among 12 503 individuals, there were 2208 cases of cataract with a prevalence of 18.3 %. The prevalence of cataract was higher in the aged, female and lower-income persons （P 〈 0.05 ）. Among 2208 cataract patients, cataract surgery was performed in 263 cases （ 11.9% ）. The surgical coverage rate of cataract was 59.7% and the social burden rate of cataract blindness 1.93%. The social burden rate of cataract blindness was higher in the aged persons （P 〈 0.01 ）. In 357 eyes with cataract surgery, the rate of intraocular lens implantation was 85.7%. At Binhu, 71. 0% of eyes with cataract surgery underwent phocoemusification. At Funing, 73.6% of eyes underwent modem extra-capsular surgery respectively. Post- operative presenting and best corrected visual acuity over 0. 7 was 11.2% and 19.6% of operated eyes respectively. The main causes of post-operative eyes with worse visual acuity （ 〈 0.3 ） were post-capsular opacity and retinal disorders. Conclusion Catara